An advantage of using extreme groups in quasi-experiments is that this approach:
A)increases test sensitivity
B)minimizes person confounds
C)improves external validity
D)replaces random assignment

Question

Quizplus · Accepted Answer

Using extreme groups (i.e. groups at the extreme ends of a variable) in quasi-experiments can increase test sensitivity, allowing for greater differentiation between groups and thus a more accurate measurement of the effect of an intervention or treatment. While it may reduce person confounds to some extent, it does not necessarily improve external validity, as quasi-experiments by definition lack random assignment and thus may not be representative of the population. Using extreme groups does not replace random assignment, but may be a useful complementary approach in quasi-experimental designs.

An Advantage of Using Extreme Groups in Quasi-Experiments Is That